Lots of variables. Don't know what unit you have, or it's maximum temp. Problably max of 250 or 300 degrees. Skin on I presume - means you'll probably have to crisp them on a grill.
Best bet is crank it up, then click on the "find" button above. De-select the little box, and type in "chicken leg quarters" I just did and it came up with 29 hits. Hope this helps.
Jack